// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jrt;

import java.io.ByteArrayOutputStream;
import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;

import com.yahoo.jrt.tool.RpcInvoker;


public class InvokeSyncTest extends junit.framework.TestCase {

    Supervisor server;
    Acceptor   acceptor;
    Supervisor client;
    Target     target;
    
    public InvokeSyncTest(String name) {
        super(name);
    }

    public void setUp() throws ListenFailedException {
        server   = new Supervisor(new Transport());
        client   = new Supervisor(new Transport());
        acceptor = server.listen(new Spec(Test.PORT));
        target   = client.connect(new Spec("localhost", Test.PORT));
        server.addMethod(new Method("concat", "ss", "s", this, "rpc_concat")
                         .methodDesc("Concatenate 2 strings")
                         .paramDesc(0, "str1", "a string")
                         .paramDesc(1, "str2", "another string")
                         .returnDesc(0, "ret", "str1 followed by str2"));
        server.addMethod(new Method("alltypes", "bhilfds", "s", this, "rpc_alltypes")
                          .methodDesc("Method taking all types of params"));
    }

    public void tearDown() {
        System.setOut(new PrintStream(new FileOutputStream(FileDescriptor.out)));
        target.close();
        acceptor.shutdown().join();
        client.transport().shutdown().join();
        server.transport().shutdown().join();
    }

    public void rpc_concat(Request req) {
        req.returnValues().add(new StringValue(req.parameters()
                                               .get(0).asString() +
                                               req.parameters()
                                               .get(1).asString()));
    }

    public void rpc_alltypes(Request req) {
        req.returnValues().add(new StringValue("This was alltypes. The string param was: "+req.parameters().get(6).asString()));
    }
    
    public void testSync() {
        Request req = new Request("concat");
        req.parameters().add(new StringValue("abc"));
        req.parameters().add(new StringValue("def"));

        target.invokeSync(req, 5.0);

        assertTrue(!req.isError());
        assertEquals(1, req.returnValues().size());
        assertEquals("abcdef", req.returnValues().get(0).asString());
    }
    
    public void testRpcInvoker() throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        System.setOut(new PrintStream(baos));
        RpcInvoker.main(new String[] {"-h", "localhost:"+Test.PORT, "concat", "s:foo", "s:bar"});
        baos.flush();
        assertEquals(baos.toString(), "foobar\n");
        baos.reset();
        System.setOut(new PrintStream(baos));
        RpcInvoker.main(new String[] {"-h", "localhost:"+Test.PORT, "alltypes", "b:1", "h:2", "i:3", "l:4", "f:5.0", "d:6.0", "s:baz"});
        baos.flush();
        assertEquals(baos.toString(), "This was alltypes. The string param was: baz\n");
    }

}
